Quick Takeaways
- JANUS HENDERSON GROUP PLC filed SCHEDULE 13G/A for DYNE THERAPEUTICS INC Common Stock (DYN).
- Disclosed ownership: 9.2%.
- Date of event: 31 Mar 2025.
JANUS HENDERSON GROUP PLC - 31 Mar 2025 SCHEDULE 13G/A Report for DYNE THERAPEUTICS INC Common Stock (DYN)
- Filing Manager
- JANUS HENDERSON GROUP PLC
- Reporting Manager
- JANUS HENDERSON GROUP PLC
- Security
- DYNE THERAPEUTICS INC Common Stock
- Symbol
- DYN
- Shares outstanding
- 112,542,120 shares
- Disclosed Ownership
- 10,353,875 shares
- Ownership
- 9.2%
- Form type
- SCHEDULE 13G/A
- Filing time
- 14 May 2025, 12:16:34 UTC
- Date of event
- 31 Mar 2025
- Previous filing
- 14 Feb 2025
- Next filing
- 07 Aug 2025
- SEC
- View on sec.gov
Quoteable Key Fact
"JANUS HENDERSON GROUP PLC disclosed 9.2% ownership in DYNE THERAPEUTICS INC Common Stock (DYN) on 31 Mar 2025."
What Changed
- Previous schedule filing date: 14 Feb 2025.
- Current filing was accepted on 14 May 2025, 12:16.
Why This Matters
- This page explains what this Schedule 13D/13G filing tells you before manager-level rows.
- You can verify ownership claims directly against the original SEC filing.
Source Evidence
Backed by Schedule 13D/13G
See Original Filing
Beneficial ownership values are sourced from the original SEC Schedule 13D/13G filing.
Reporting Managers (1)
| Name | Ownership | Shares Owned | sole voting power | shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| JANUS HENDERSON GROUP PLC | 9.2% | 10,353,875 | 0 | 10,353,875 | Kristin Mariani | Head of North America Compliance, CCO |